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OPA549 GC for Car
OPA549 GC for Car
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Old 13th June 2005, 03:15 AM   #1
rehanabid is offline rehanabid  Pakistan
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Talking OPA549 GC for Car

Hi guys:
I have lots of OPA549 chips lying around and was thinking of designing a GC for subwoofer to be used in my car, OPA549 data sheet suggests that it could be operated via single supply, as I am a usual lamer, therefore i was looking forward if anyone in this forum could guide me as how to make a GC with OPA549 with single supply of 12Volts?
Any help will be appreciated.
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Old 13th June 2005, 03:49 AM   #2
bigmike216 is offline bigmike216  Canada
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it can certainly be done, but at 12v single supply, you're not going to get more than a few watts..
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Old 13th June 2005, 04:13 AM   #3
mod_evil is offline mod_evil  Brazil
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Hi friend, how i found rms in my OPA549T amp?
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Old 13th June 2005, 04:55 AM   #4
Sashi is offline Sashi  India
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Quote:
Originally posted by mod_evil
Hi friend, how i found rms in my OPA549T amp?

Hi Friend,look here
http://www.diyaudio.com/forums/showt...threadid=14768
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Old 13th June 2005, 05:21 AM   #5
mod_evil is offline mod_evil  Brazil
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Ohhh friend, thanks for the link! When i paraleling 2 OPA549 the W drouble?
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Old 13th June 2005, 05:23 AM   #6
bigmike216 is offline bigmike216  Canada
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the wattage won't double when you parllel, unless you're driving low loads. Bridging will though.
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Old 13th June 2005, 03:42 PM   #7
rehanabid is offline rehanabid  Pakistan
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Thumbs up OPA549

Well I was planning to use three OPA549s in bridge parallel mode as mentioned in data sheet, and it will deliver some nice output, but my question remains the same
HOW TO USE 12volt supply?
any ideas/ suggestions?
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Old 13th June 2005, 03:57 PM   #8
mod_evil is offline mod_evil  Brazil
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http://www.diyaudio.com/forums/showt...501&highlight=

You need connect the V- to the GROUND...


Thanks.
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Old 13th June 2005, 04:02 PM   #9
rehanabid is offline rehanabid  Pakistan
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thanks mod_evil , link that u have posted is of great help, let me work out the schematics for bridged parallel woofer for car and i ll post the same here.
Rehan
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Old 13th June 2005, 04:04 PM   #10
mod_evil is offline mod_evil  Brazil
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Okay... Can you post in here the schematic of your bridged parallel OPA549?
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